in figure 20. 18, radii of the two concentric circles are 7cm and 14cm and angle AOB=40degree, find the area of the shaded region ABCD.
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HI mate here is your answwr
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sushanths:
In text book answer is 231/4cmsquare
231/4 is 57.75 only..apply mind...
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57.75 cm square will be the
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text answer is 231/4cmsquare
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